Empirical Labs Lil FrEQ, 19" Equalizer Mono, Freq. Response 5 Hz to 140 kHz on transformerless inputs and outputs, Transformer Output response is 10 Hz to 110 kHz, Dynamic Range 120 dB from maximum output (.1% clipping) to minimum output. Greater than 110 dB signal to noise, Distortion Ranges between .00056% and .005% depending on mode and settings. DS section has THD < .005%, DC coupled Input and Outputs and one transformer coupled Output, High quality audio caps used internally, Dynamic Time Constants Attack is approximately .5 mS. Release .04 sec, fixed internally, XLR and 6,3 mm Jack In-Output, Instrumenbtinput on frontside, 19" 1U